Methyl 4-(difluoromethyl)-2-nitro-5-(trifluoromethoxy)pyridine-3-acetate
3-(Difluoromethyl)-4-methoxy-6-(trifluoromethoxy)pyridine-2-carboxylic acid
Ethyl 6-(difluoromethyl)-4-methoxy-3-(trifluoromethoxy)pyridine-2-acetate
3-(Difluoromethyl)-4-methoxy-2-(trifluoromethoxy)pyridine-6-carboxylic acid